ARM: restart: integrator: use new restart hook

Hook these platforms restart code into the new restart hook rather
than using arch_reset().

Acked-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

arch/arm/mach-integrator/common.h

@@ -1,2 +1,3 @@
 void integrator_init_early(void);
 void integrator_reserve(void);
+void integrator_restart(char, const char *);